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T1. Introduction of Wii remote PowerPoint PPT Presentation

T1. Introduction of Wii remote ELEC2807 Integrated Project (InfoE) Something you should know … Nicknamed “ Wiimote ” The controller of the Wii video game console Powered by 2 AA batteries Bluetooth communication Basic features of Wii remote Button 11 buttons

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T1. Introduction of Wii remote

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T1 introduction of wii remote l.jpg

T1. Introduction of Wii remote

ELEC2807 Integrated Project (InfoE)


Something you should know l.jpg

Something you should know …

Nicknamed “Wiimote”

The controller of the

Wiivideo game

console

Powered by 2 AA batteries

Bluetooth communication


Basic features of wii remote l.jpg

Basic features of Wii remote

  • Button

    • 11 buttons

    • Some buttons have special usage, like pressing 1 and 2 together to start Bluetooth pairing

  • Sensing

    • Accelerometer

    • Infrared Camera

  • Feedback

    • Rumble

    • LED display

    • Built-in speaker


Sensing accelerometer 1 l.jpg

Sensing – Accelerometer (1)

  • Use the ADXL330 accelerometer

  • To sense acceleration along three axes of the Wii remote

  • The accelerometer measures linear acceleration in a free fall frame of reference

  • Which means, if the Wii remote is in free fall, it will report zero acceleration. At rest, it will report an upward acceleration (+Z, when horizontal) equal to the acceleration due to gravity


Sensing accelerometer 2 l.jpg

Sensing – Accelerometer (2)

  • One typical usage is using accelerometer to capture and analysis user’s motion

Motion

Data

Analysis Result

Golf

Baseball


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Sensing – Infrared Camera(1)

  • Resolution of the infrared camera inside Wii remote can be up to 1024 x 768

  • Capable of tracking up to 4 moving objects

  • Field of view is about 33 degrees horizontally and 23 degrees vertically

  • Infrared light sources with wavelength other than 940nm will be filtered by the infrared filter


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Sensing – Infrared Camera(2)

  • The infrared camera and infrared emitter (e.g. infrared LED) can act as a pointing device

  • The Wii Sensor bar, which is technically an array of infrared LED. The relative movement of the infrared LED will be used for cursor position update.


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Feedback - Rumble

  • Wii remote will vibrate when the rumble function is activated

  • Usually, game use the rumble function to indicate a crash or being hit.


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Feedback – LED Display

  • 4 blue LEDs are on the front of the Wii remote

  • During initialization state (Bluetooth pairing), these 4 LEDs will blink.

    • The number of blinking LED indicate the battery power :

      • 4 LEDs : ~ 100%

      • 3 LEDs : ~ 75%

      • 2 LEDs : ~ 50%

      • 1 LED : ~ 25%


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Feedback - Built-in speaker

  • Wii remote has a small low-quality 21mm speaker, used for short sound effects during game play

  • The sound is streamed directly from the host (e.g. The Wii console, PC etc)


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